GUN VIOLENCE: Betty Jo Massengale, 80, was shot in the back by 73-year-old James Daniel Guler, who was also killed, as Gwinnett County police responded to a domestic dispute call near Buford, Ga. A police officer has been placed on administrative leave.

According to media reports, police responded to the home in the 6400 block of Old Shadburn Road shortly after 12:30 a.m., when the officer approaching the home saw Betty Jo Massengale walking toward him in the driveway. She was shot in the back by Guler.

Police returned fire at James Daniel Guler, who fell to the ground and fired another round, police said. It is not clear if James Guler died from a self-inflicted gunshot wound or if he was killed by police.